Pomerai De, David
Cambridge University Press, 1985
Buku Teks
Enger, Eldon D., author
McGraw-Hill, 2003
Buku Teks
Hellmann, Donald C., author
University of California Press, 1969
Buku Teks
Sopa Merim Pemere, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2013
UI - Skripsi (Membership)
Cazadira Fediva Tamzil, author
2014
UI - Skripsi (Membership)